JPH06142636A - Method for reusing aluminum dross - Google Patents
Method for reusing aluminum drossInfo
- Publication number
- JPH06142636A JPH06142636A JP4299630A JP29963092A JPH06142636A JP H06142636 A JPH06142636 A JP H06142636A JP 4299630 A JP4299630 A JP 4299630A JP 29963092 A JP29963092 A JP 29963092A JP H06142636 A JPH06142636 A JP H06142636A
- Authority
- JP
- Japan
- Prior art keywords
- aluminum dross
- aluminum
- intermediate product
- dross
- hydraulic material
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 36
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 35
- 238000000034 method Methods 0.000 title claims description 4
- 239000000463 material Substances 0.000 claims abstract description 21
- 239000000203 mixture Substances 0.000 claims abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000013067 intermediate product Substances 0.000 claims abstract description 9
- 239000002994 raw material Substances 0.000 claims abstract description 8
- 239000002699 waste material Substances 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 abstract description 7
- 238000002844 melting Methods 0.000 abstract description 3
- 230000008018 melting Effects 0.000 abstract description 3
- 238000005507 spraying Methods 0.000 abstract description 3
- 229910052751 metal Inorganic materials 0.000 abstract 1
- 239000002184 metal Substances 0.000 abstract 1
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 8
- 239000011398 Portland cement Substances 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 5
- 229910052602 gypsum Inorganic materials 0.000 description 5
- 239000010440 gypsum Substances 0.000 description 5
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 4
- 239000000292 calcium oxide Substances 0.000 description 4
- 235000012255 calcium oxide Nutrition 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 3
- 238000010298 pulverizing process Methods 0.000 description 3
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 229910010413 TiO 2 Inorganic materials 0.000 description 2
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 2
- 239000000920 calcium hydroxide Substances 0.000 description 2
- 235000011116 calcium hydroxide Nutrition 0.000 description 2
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 2
- 239000004035 construction material Substances 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- FEWJPZIEWOKRBE-JCYAYHJZSA-N Dextrotartaric acid Chemical compound OC(=O)[C@H](O)[C@@H](O)C(O)=O FEWJPZIEWOKRBE-JCYAYHJZSA-N 0.000 description 1
- 229910020068 MgAl Inorganic materials 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- FEWJPZIEWOKRBE-UHFFFAOYSA-N Tartaric acid Natural products [H+].[H+].[O-]C(=O)C(O)C(O)C([O-])=O FEWJPZIEWOKRBE-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 229910000288 alkali metal carbonate Inorganic materials 0.000 description 1
- 150000008041 alkali metal carbonates Chemical class 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- XFWJKVMFIVXPKK-UHFFFAOYSA-N calcium;oxido(oxo)alumane Chemical compound [Ca+2].[O-][Al]=O.[O-][Al]=O XFWJKVMFIVXPKK-UHFFFAOYSA-N 0.000 description 1
- 239000012295 chemical reaction liquid Substances 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- XGZVUEUWXADBQD-UHFFFAOYSA-L lithium carbonate Chemical compound [Li+].[Li+].[O-]C([O-])=O XGZVUEUWXADBQD-UHFFFAOYSA-L 0.000 description 1
- 229910052808 lithium carbonate Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000010309 melting process Methods 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 229910000027 potassium carbonate Inorganic materials 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000011975 tartaric acid Substances 0.000 description 1
- 235000002906 tartaric acid Nutrition 0.000 description 1
- 239000012463 white pigment Substances 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
Landscapes
- Processing Of Solid Wastes (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は回収されたアルミニウム
缶などを溶解してアルミニウム地金とする際に発生する
アルミドロスの再利用方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for reusing aluminum dross generated when melting a recovered aluminum can or the like to form an aluminum ingot.
【０００２】[0002]
【従来の技術】アルミニウム缶などのアルミニウム廃材
（スクラップ）を溶解してアルミニウム地金として再生
する場合、スクラップにＮａＣｌ，ＫＣｌ等のフラック
スを添加して溶解するのであるが、この際ドロスと称さ
れる鉱滓が副生する。このドロスは、その後水洗されて
可溶性成分が除かれてアルミドロスとなる。2. Description of the Related Art When aluminum waste materials (scraps) such as aluminum cans are melted and recycled as aluminum ingots, fluxes such as NaCl and KCl are added to the scraps to be melted, which is called dross. A slag is produced as a by-product. This dross is then washed with water to remove soluble components and become aluminum dross.
【０００３】このアルミドロスの構成物組成は、例えば
次のようなものである。The composition composition of this aluminum dross is, for example, as follows.
【０００４】メタリックＡｌ： ４重量％ Ａｌ（ＯＨ）3 ：６８重量％ ＭｇＯ ：１０重量％ ＭｇＡｌ2 Ｏ4 ： ６重量％ その他 ：１２重量％ この「その他」には、アルミ缶塗料中の白色顔料に由来
するＴｉＯ2 の他、Ｆｅ2 Ｏ3 ，ＭｎＯ，Ｎａ2 Ｏ，Ｓ
Ｏ3 などが含有される。[0004] Metallic Al: 4 wt% Al (OH) 3: 68 wt% MgO: 10 wt% MgAl 2 O 4: 6 wt% Others: 12% The "other" white pigment in aluminum cans Paint another TiO 2 derived from, Fe 2 O 3, MnO, Na 2 O, S
O 3 and the like are contained.
【０００５】[0005]
【発明が解決しようとする課題】従来、このアルミドロ
スは、すべて廃棄処分されていたのであるが、廃棄すべ
き埋立地等が乏しいこともあり、再利用が望まれてい
た。Conventionally, all of the aluminum dross has been disposed of, but since there are few landfills to be disposed of, it has been desired to reuse it.
【０００６】本発明は、上記従来の実情に鑑みてなされ
たものであって、アルミドロスを有効利用して、カルシ
ウムアルミネートを主成分とする速硬性水硬性材料を製
造する方法を提供することを目的とする。The present invention has been made in view of the above conventional circumstances, and provides a method for producing a fast-setting hydraulic material mainly containing calcium aluminate by effectively utilizing aluminum dross. With the goal.
【０００７】[0007]
【課題を解決するための手段】本発明のアルミドロスの
再利用方法は、アルミニウム廃材の溶解工程で発生した
アルミドロス及び石灰質原料と水とを混合し、得られた
混合物を加熱してＣ3ＡＨ6 を含む中間生成物を得、該
中間生成物を３００〜４００℃で加熱してＣ3ＡＨ1.5
及び／又はＣ12Ａ7 Ｈを主成分とする速硬性水硬性材料
を得ることを特徴とする。The method for reusing aluminum dross according to the present invention comprises mixing aluminum dross and calcareous raw material generated in the step of melting aluminum waste with water and heating the resulting mixture to produce C 3 An intermediate product containing AH 6 was obtained, which intermediate product was heated at 300-400 ° C. to produce C 3 AH 1.5.
And / or obtaining a fast-setting hydraulic material mainly containing C 12 A 7 H.
【０００８】[0008]
【作用】かかる本発明によると、従来は廃棄されていた
アルミドロスを、建築物や道路等の補修材料、緊急工事
材料、吹付け材料等として有用な速硬性水硬性材料とし
て再利用することができる。According to the present invention, the aluminum dross, which has been conventionally discarded, can be reused as a quick-hardening hydraulic material useful as a repair material for buildings, roads, etc., an emergency construction material, a spraying material, etc. it can.
【０００９】以下、本発明の構成についてさらに詳細に
説明する。The structure of the present invention will be described in more detail below.
【００１０】本発明において採用されるアルミドロス
は、通常は、各種アルミスクラップの溶解工程から排出
されるドロスをボールミル等で粉砕し、反応槽に投じて
水洗し、濾別し、さらにフィルタープレス等で脱水した
ものである。The aluminum dross used in the present invention is usually crushed by a ball mill or the like from the dross discharged from the melting process of various aluminum scraps, thrown into a reaction tank, washed with water, filtered and further filtered. It was dehydrated in.
【００１１】このアルミドロスに添加される石灰質原料
としては、消石灰（Ｃａ（ＯＨ）2）が好適であるが、
生石灰（ＣａＯ）であっても良い。石灰質原料の添加割
合は、添加後の混合物中のＣａＯ／Ａｌ2 Ｏ3 モル換算
比が２．５〜４、特に３程度になるようにするのが好ま
しい。As the calcareous raw material added to the aluminum dross, slaked lime (Ca (OH) 2 ) is suitable,
It may be quicklime (CaO). The ratio of the calcareous raw material added is preferably such that the CaO / Al 2 O 3 molar conversion ratio in the mixture after the addition is 2.5 to 4 , particularly about 3.
【００１２】本発明においては、アルミドロスに所定量
の石灰質原料を添加してボールミル等で十分に混合し、
これに水を加えて加熱反応させる。In the present invention, a predetermined amount of calcareous raw material is added to aluminum dross and thoroughly mixed with a ball mill or the like,
Water is added to this and the mixture is heated and reacted.
【００１３】ここで、水の添加量はアルミドロスと石灰
質原料の混合物１００重量部に対して２００〜５００重
量部、特に３００重量部程度とするのが好ましい。The amount of water added is preferably 200 to 500 parts by weight, more preferably about 300 parts by weight, based on 100 parts by weight of the mixture of aluminum dross and calcareous raw material.
【００１４】また、反応は５０〜１００℃、特に９０〜
９５℃の加熱下で行なうのが好ましく、このような程度
範囲において、反応時間は３０分以上、特に２時間以上
とするのが好ましい。The reaction is carried out at 50 to 100 ° C., especially 90 to
It is preferable to carry out the heating under heating at 95 ° C. In such a range, the reaction time is preferably 30 minutes or longer, particularly 2 hours or longer.
【００１５】このような加熱反応後、反応液を濾過する
ことによりＣ3 ＡＨ6 （３ＣａＯ・Ａｌ2 Ｏ3 ・６Ｈ2
Ｏ）を含む中間生成物が得られる。After such heating reaction, the reaction solution is filtered to obtain C 3 AH 6 (3CaO.Al 2 O 3 .6H 2
An intermediate product containing O) is obtained.
【００１６】得られた中間生成物は、加熱してＣ3 ＡＨ
1.5 （３ＣａＯ・Ａｌ2 Ｏ3 ・１．５Ｈ2 Ｏ）及び／又
はＣ12Ａ7 Ｈ（１２ＣａＯ・７Ａｌ2 Ｏ3 ・Ｈ2 Ｏ）を
主成分とする速硬性水硬性材料を得る。この加熱は３０
０〜５００℃、特に３５０〜４００℃で行なうのが好ま
しい。The resulting intermediate product is heated to produce C 3 AH.
1.5 obtain (3CaO · Al 2 O 3 · 1.5H 2 O) and / or C 12 A 7 H (12CaO · 7Al 2 O 3 · H 2 O) fast curing hydraulic material composed mainly of. This heating is 30
It is preferably carried out at 0 to 500 ° C, particularly 350 to 400 ° C.
【００１７】このものは、ブレーン比表面積３０００〜
１００００ｃｍ2 ／ｇに粉砕し、水を加えて混練して補
修、吹付等に使用される。This has a Blaine specific surface area of 3000 to
It is crushed to 10000 cm 2 / g, added with water and kneaded to be used for repair and spraying.
【００１８】なお、本発明により製造される速硬性水硬
性材料は、その使用に対し、石膏及び／又はポルトラン
ドセメントを添加して用いても良い。石膏及び／又はポ
ルトランドセメントを添加する場合、その添加量は上記
粉砕物１００重量部に対し石膏は５５重量部以下、ポル
トランドセメントは９００重量部以下とするのが好まし
い。The quick-setting hydraulic material produced according to the present invention may be used by adding gypsum and / or Portland cement to its use. When gypsum and / or portland cement is added, the addition amount is preferably 55 parts by weight or less and 100 parts by weight or less of portland cement with respect to 100 parts by weight of the pulverized product.
【００１９】なお、石膏及び／又はポルトランドセメン
トは、速硬性水硬性材料の粉砕時に添加しても良い。こ
の場合、ポルトランドセメントとしてはクリンカーを用
いても良い。Incidentally, gypsum and / or Portland cement may be added at the time of pulverizing the quick-setting hydraulic material. In this case, clinker may be used as the Portland cement.
【００２０】このような本発明の速硬性水硬性材料を実
用するに際しては、必要とされる可使時間を得るために
遅延剤を用いてもよい。ここで用いる遅延剤とは、オキ
シカルボン酸（例えば、クエン酸、酒石酸など）、ある
いはそれとアルカリ金属炭酸塩（例えば、炭酸ナトリウ
ム、炭酸カリウム、炭酸リチウムなど）を併用したもの
が好適である。In putting such a quick-setting hydraulic material of the present invention into practical use, a retarder may be used in order to obtain the required pot life. The retarder used here is preferably an oxycarboxylic acid (eg, citric acid, tartaric acid, etc.) or a combination thereof with an alkali metal carbonate (eg, sodium carbonate, potassium carbonate, lithium carbonate, etc.).
【００２１】[0021]
【実施例】以下に実施例を挙げて本発明をより具体的に
説明する。EXAMPLES The present invention will be described in more detail with reference to the following examples.
【００２２】実施例１ 下記の組成のアルミドロス１００重量部に対し、消石灰
を１１０重量部加え、ボールミル中で混合粉砕した後、
水６３０重量部を加え、９０℃で２４時間反応させた。
その後、反応液を濾過し、得られた生成物を１００℃で
６時間乾燥した後、３５０℃で焼成（加熱脱水）した。
その後、ブレーン比表面積３８００ｃｍ2 ／ｇまで粉砕
した。Example 1 110 parts by weight of slaked lime was added to 100 parts by weight of aluminum dross having the following composition, mixed and pulverized in a ball mill,
630 parts by weight of water was added, and the mixture was reacted at 90 ° C. for 24 hours.
Then, the reaction liquid was filtered, the obtained product was dried at 100 ° C. for 6 hours, and then baked at 350 ° C. (heat dehydration).
Then, the Blaine specific surface area was pulverized to 3800 cm 2 / g.
【００２３】この粉砕物１００重量部に対し水を３０重
量部添加して混練し、直径５ｃｍ、高さ１０ｃｍの型枠
中に入れ、硬化させた後、脱型して成形体を得た。この
成形体の強度（３時間後）は１６ｋｇｆ／ｃｍ2 であっ
た。30 parts by weight of water was added to 100 parts by weight of the pulverized product, and the mixture was kneaded, placed in a mold having a diameter of 5 cm and a height of 10 cm, cured, and then demolded to obtain a molded body. The strength of this molded body (after 3 hours) was 16 kgf / cm 2 .
【００２４】アルミドロスの組成（重量％） Ａｌ2 Ｏ3 ：５６．９ ＭｇＯ ：１１．８ ＴｉＯ2 ： ３．１ Ｆｅ2 Ｏ3 ： １．５ ＳｉＯ2 ： １．９ ＭｎＯ ： ０．３ ＣａＯ ： ０．３ Ｎａ2 Ｏ ： ０．４ Ｋ2 Ｏ ： ０．３ ＳＯ3 ： ４．３ Ｐ2 Ｏ5 ： ０．１ Ｃｌ ： ０．６ Ｉｇ．ｌｏｓｓ：１８．５ 実施例２ 実施例１において、粉砕時に石膏を焼成物１００重量部
に対し５０重量部添加したこと以外は同様にして実験を
行なった。得られた成形体の強度（３時間後）は１９ｋ
ｇｆ／ｃｍ2 であった。 Composition of aluminum dross (% by weight) Al 2 O 3 : 56.9 MgO: 11.8 TiO 2 : 3.1 Fe 2 O 3 : 1.5 SiO 2 : 1.9 MnO: 0.3 CaO : 0.3 Na 2 O: 0.4 K 2 O: 0.3 SO 3 : 4.3 P 2 O 5 : 0.1 Cl: 0.6 Ig. loss: 18.5 Example 2 An experiment was performed in the same manner as in Example 1, except that 50 parts by weight of gypsum was added to 100 parts by weight of the calcined product during pulverization. The strength of the obtained molded body (after 3 hours) is 19k.
It was gf / cm 2 .
【００２５】実施例３ 実施例１において、粉砕時に焼成物１００重量部に対し
石膏５０重量部及びポルトランドセメント３５０重量部
を添加したこと以外は同様にして実験を行なった。得ら
れた成形体の強度（３時間後）は１６３ｋｇｆ／ｃｍ2
であった。Example 3 An experiment was carried out in the same manner as in Example 1 except that 50 parts by weight of gypsum and 350 parts by weight of Portland cement were added to 100 parts by weight of the burned material during pulverization. The strength of the obtained molded body (after 3 hours) was 163 kgf / cm 2.
Met.
【００２６】[0026]
【発明の効果】以上の通り、本発明によると、従来は廃
棄されていたアルミドロスを補修材、緊急工事材料、吹
付材等として有用な速硬性水硬性材料として再利用でき
る。As described above, according to the present invention, aluminum dross, which has been conventionally discarded, can be reused as a quick-hardening hydraulic material useful as a repair material, an emergency construction material, a spray material and the like.
Claims (1)
アルミドロス及び石灰質原料と水とを混合し、得られた
混合物を加熱してＣ3 ＡＨ6 を含む中間生成物を得、該
中間生成物を３００〜４００℃で加熱してＣ3 ＡＨ1.5
及び／又はＣ12Ａ7 Ｈを主成分とする速硬性水硬性材料
を得ることを特徴とするアルミドロスの再利用方法。1. An aluminum dross and a calcareous raw material generated in the step of dissolving a waste aluminum material are mixed with water, and the obtained mixture is heated to obtain an intermediate product containing C 3 AH 6. Heat at 300-400 ° C to C 3 AH 1.5
And / or a method of reusing aluminum dross, characterized in that a rapid hardening hydraulic material containing C 12 A 7 H as a main component is obtained.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4299630A JPH06142636A (en) | 1992-11-10 | 1992-11-10 | Method for reusing aluminum dross |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4299630A JPH06142636A (en) | 1992-11-10 | 1992-11-10 | Method for reusing aluminum dross |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH06142636A true JPH06142636A (en) | 1994-05-24 |
Family
ID=17875091
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4299630A Withdrawn JPH06142636A (en) | 1992-11-10 | 1992-11-10 | Method for reusing aluminum dross |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06142636A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006056989A (en) * | 2004-08-19 | 2006-03-02 | Mitsubishi Materials Corp | Hydraulic alumina, neutral solidification material for water-containing soil obtained by using the same, method for producing hydraulic alumina, method for preventing heavy metal from being eluted, and method of dehydration and solidification treatment of highly water-containing soil |
| JP2006297285A (en) * | 2005-04-20 | 2006-11-02 | Ube Ind Ltd | Low alkali hardner for water-containing soil and hardening treatment method |
| JP4690729B2 (en) * | 2005-01-14 | 2011-06-01 | 三菱マテリアル株式会社 | Hydraulic alumina composition for hydrous soil neutral solidifying material, method for producing the same, neutral solidifying material for hydrous soil, method for preventing heavy metal elution, and dehydration solidification method for highly hydrous soil |
-
1992
- 1992-11-10 JP JP4299630A patent/JPH06142636A/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006056989A (en) * | 2004-08-19 | 2006-03-02 | Mitsubishi Materials Corp | Hydraulic alumina, neutral solidification material for water-containing soil obtained by using the same, method for producing hydraulic alumina, method for preventing heavy metal from being eluted, and method of dehydration and solidification treatment of highly water-containing soil |
| JP4680549B2 (en) * | 2004-08-19 | 2011-05-11 | 三菱マテリアル株式会社 | Hydraulic alumina composition for hydrous soil neutral solidifying material, method for producing the same, neutral solidifying material for hydrous soil, method for preventing heavy metal elution, and dehydration solidification method for highly hydrous soil |
| JP4690729B2 (en) * | 2005-01-14 | 2011-06-01 | 三菱マテリアル株式会社 | Hydraulic alumina composition for hydrous soil neutral solidifying material, method for producing the same, neutral solidifying material for hydrous soil, method for preventing heavy metal elution, and dehydration solidification method for highly hydrous soil |
| JP2006297285A (en) * | 2005-04-20 | 2006-11-02 | Ube Ind Ltd | Low alkali hardner for water-containing soil and hardening treatment method |
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